One-Button Channel Switching: The ABY Single Block Effect Pedal Line Selector Guitar Effect Pedal allows for easy and convenient channel switching with just one button. This feature makes it simple for musicians to switch between different sound effects, enhancing their performance and musical creativity. No Power Source Required: This guitar effect pedal does not require a power source to operate. This makes it an ideal choice for musicians , as it eliminates the need for carrying around extra power cords or worrying about finding an outlet. Two-Way Transmission: The ABY Single Block Effect Pedal Line Selector Guitar Effect Pedal supports two-way transmission, allowing for a more versatile and dynamic sound. This feature enables musicians to experiment with a range of sound effects, adding depth and complexity to their music. , Anti-Slip Metal Shell: This guitar effect pedal is housed in a metal shell that is also anti-slip, ensuring that it stays in place during performances. Its compact and portable design makes it easy to carry around, making it a great choice for musicians who frequently travel for gigs. Supports A/B and A+B Modes: The ABY Single Block Effect Pedal Line Selector Guitar Effect Pedal supports both A/B and A+B modes, providing musicians with more options for sound manipulation. This feature allows musicians to seamlessly switch between different sound effects, adding variety and interest to their performances. Specifications: Input Power: DC 9V equal 300mA A/B/Y Jack: 1/4 inchmono audio jack Item Size: 8.8 x4 x 2.5cm/3.5 x1.6 x1 inch Item Weight: 146g/5.1oz Colour:black Material:Metal Package Contents: 1 x Guitar Adapter 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.